30403215401981 has 2 divisors, whose sum is σ = 30403215401982. Its totient is φ = 30403215401980.

The previous prime is 30403215401963. The next prime is 30403215402031. The reversal of 30403215401981 is 18910451230403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30177937968025 + 225277433956 = 5493445^2 + 474634^2 .

It is a cyclic number.

It is not a de Polignac number, because 30403215401981 - 2²⁶ = 30403148293117 is a prime.

It is a super-2 number, since 2×30403215401981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30403215451981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15201607700990 + 15201607700991.

It is an arithmetic number, because the mean of its divisors is an integer number (15201607700991).

Almost surely, 2^{30403215401981} is an apocalyptic number.

It is an amenable number.

30403215401981 is a deficient number, since it is larger than the sum of its proper divisors (1).

30403215401981 is an equidigital number, since it uses as much as digits as its factorization.

30403215401981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 30403215401981 in words is "thirty trillion, four hundred three billion, two hundred fifteen million, four hundred one thousand, nine hundred eighty-one".